20 Most Recent LG BD690 Player Questions & Answers


Something is changing inside the TV. Most likely a voltage from the power supply since that would affect the different circuits that are causing multiple visual symptoms on the screen, and as the voltage returns to normal; all of the symptoms go away. Suspect the main power supply board in the TV, Most likely there are faulty filter capacitors that control supply voltages by filtering out AC interference.. When they start to go bad they begin to run warm and it takes them longer and longer to start working correctly. Probably (probably) when you first noticed the problem, it went away in a few minutes and it is taking longer and longer for it to clear up.. Sounds like they are close to quitting completely !

LG Televison &... | Answered Yesterday


Sound like unit is wet inside or some buttons are stuck. Usually happens when sweet drink us spilled on remote

LG Televison &... | Answered 2 days ago


If you already tested with the flashlight which is the first step in the blank screen with sound fault then you have to test the LED Backlight supply voltages if you are familiar and good in the electronic repair. First you have to check if bulging capacitors for the LED Backlight drive voltage circuit, replace them. If capacitors are good then you have check the backlight LEDs. The flashlight test proves that the power supply is good and TV is working fine because the sound is ok and picture is fine. Attached videos and links may help you for the repair and replacement of backlight LED strips or LEDs itself depending on the type of LED strips used in your model.
https://www.youtube.com/watch?v=Z1DEkSguWtg
https://www.youtube.com/watch?v=YgaL6X6eSaU
https://www.youtube.com/watch?v=EZVQKEp6jxk
https://www.youtube.com/watch?v=T2FboV-1PJg
https://www.youtube.com/watch?v=2pyuXwNkBMA






LG Televison &... | Answered on Dec 14, 2018


If new batteries correctly installed do not revive your LG remote control, it probably is shot.

LG Televison &... | Answered on Dec 14, 2018


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

LG Televison &... | Answered on Dec 14, 2018


You have lost your backlights and this is very common for the LN series LG TVs...they use 6 volt lamps and if one opens the entire string goes out, kind of like the old Christmas lights used to be. First thing to check though if your able is the voltage on both sets of cables, hook your meter to one side of the power board that supplies the lamps and see if you have voltage for a second or 2 when you power the set up and then it drops off to almost nothing, if you see this unhook the plug that goes to the lamps in the panel and see if the voltage holds at a couple hundred volts, if it does its lamps in the panel and I think you will find this is the case, if it happens the voltage drops down or isn't any to start with its the power board...Good luck

LG Televison &... | Answered on Dec 14, 2018


Take the screen off connect power and watch LEDs if any don't flash its LEDs only needed to change faulty strip if they all flash its probably t con boards.

LG Televison &... | Answered on Dec 12, 2018

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